1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x894baba1cff757250efa26bc5f0e2ee9df2bfcbac9090348cc78ec0185b1c847. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d98b2463-20a6-4e63-aa8d-dbefaa5b5d2d.json and https://artists.proofprofile.net/proofs/artist/d98b2463-20a6-4e63-aa8d-dbefaa5b5d2d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe711fa3d1caa7d1f52af8f0820f62356f469cb79bf7d71eb307bb6ec7c5925. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA6D22200515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f751aee77d335637995ec69936b93aef47b5848acb7a9f9aa53f35c4de39d83. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA6D22300472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c8c98ebee4de947e1ddee46fe5ebed6c06372d0d615b7e4100a04a9da12600. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBKPL2202584.
Caught Up (feat. Olivia O'Brien) - Slippy Remix
Caught Up (feat. Olivia O'Brien) [Remixes]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa85910f2ccde2f2e11e9b4d5d0e550eb6be1d78cf220a95e47b43af53fa300. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:59:40Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM72216072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b97beca2c589ffdf81c97841eae227d37ae19b2773409e9e722a4c72fc36c1b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA2P1942689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75726ede5e189a91194aca43eb8e0beacbb98333b132bde6a1e09f6773be0577. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:29:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM24S1924870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69131aebf1d132c4d36ff0acb9da8a734918d8db9090327ed9c9adf79b0d0f32. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA6D22300188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75726ede5e189a91194aca43eb8e0beacbb98333b132bde6a1e09f6773be0577. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM24S1924870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9523b5a79e027ac886d7ad91f3873a599ce10eb8d47d14c5feca0f961deac40. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLRD51632432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93db88d86fb43047095bf4ea432eb331f688538a987cf666cb0f9c5596facaa. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA6D21600316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f471b0b3739278f114bc80978fa319cfc2f425d6f901bb42f3b49fd8e435372. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA6D22000487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb6ee09ae827d3413d07963fc5c81c3291eb2a2e2cff97ca3a2e62094311640e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA6D22300397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd39a240331efc548f4ffcde76d1866eb1d500c38b1a00a3bfe5205d57abd21. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA2P2444865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671020b03e247a5f9f0d880670ad0a436a421b9136a7e2830c5c9e15614b6589. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR2296412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7edad2fca321874a93066715355207b8eaa91e0197528b575648688928882f1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA6D21700106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f0e6fa4bc60b59e4fcc96b7e81d47ab4dc4ed81817cd762ae48cb11e69cd20. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T17:43:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR2312458.
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08e3e1ea0a8033cf1214c76d91ebf4308b65d4bb03efd99e947d03c8eba596e. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA6D21500246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39b05f5fda98056b98ca494f0cd2f07d0bfc376f79a791905630c2e3df7a427c. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA6D21700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce9a2512fa878583bb57ba8d7c08dca36c9315b21687544642f95f9045c4bed. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA6D22200604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1083893e3d59cf4d0388d3060e290c18b971f7b26ba608d23dd545fe9a5e75c2. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ5FN2151113.